Outer Limits 4x4 Board

I am about to cut my wheelbase down. I am curently at 118". And was thinking going back to 108-110".
What do you think is the ultimate wheelbase and do you think 1" or 2" either way of what you want makes that much difference?

It is always just a compromise, I think, and depends on how heavy you are, how wide you are, how tall you are, weight distrubution, belly clearance, all sorts of things.. Sometimes 80" would be good, sometimes you really need 120".. Around 105" I reckon is the best happy medium.

If is for a competition then IMO it really depends on what sort of courses are set. Round 0 xrcc a really short WB was best IMO something around the 100in or less would have been the go cause the course was so tight and had so many turns. I would like to see the courses more open with more difficult climbs so that a longer WB will work better (say 110in)

For PUOSH WB will rule...........120in plus cause the sort of stuff we are going to find is going to be just plain hard.

I going to build about 112in with skid brakes, cutting brakes and rear disconnect so hopefully I will still be manouverable enough for xrcc.

Sam

Build it adjustable say between 100 & 112 and have the best of both worlds.!

I hate shortys they get a little tippy when the going gets tough :(

I think what Wendle said is correct it is a comprimise from one obstacle to another but I think between 100-110 is a good allrounder. After re measuring mine it will work out to be 101 inches.

Me n jk where talking the other day about why the twin steer works pretty good ,And we arrived at the conclusen the twin steer not only allows the ability to place the rear wheels better but it also while crabing effectivley shortens the wheelbase ,Giving the ability to beat those occasional wheelbase things hehe.
But it is all a comprimise of choice and terrian .
My zook is stock 80",
The rover zook cross breed -- Rouki will be the standard rover 100"

i think it not only depends on steering locks, rear steer, but weight, wieght distribution, driving style, engine type, tyre size, types of wheeling, and so forth

there has got to be a hundred factors straight up!!

ruff for your driving style i think 118" to 120" works well

i think my new rig will be loooooong, and built to GRIND

Driving style! Ive got driving style?

I thought that was just a lot of yelling and peddling real hard

pedalling is when you are on a bike!!

what you want is everyone going

DRIVE IT
GIVE IT SOME
YEAH
DRIVE IT
YOU'LL DO IT ONE GO FROM THERE

SECOND
GRAB SECOND

then you stand on it!!

hey tony, why not try 85" or 90" wheelbase, could add a whole new dimension to your wheeling

Been there flipped that, Ruff got 118, cool. 8)

118 was measuring it on my own. I just got someone to hold the other end of the tape measure and i am actually at 119.5"
From a stock wheelbase of 112.5".
This is how i got that long
Rear axle is back 1.5"
And front axle is forward 5.5"

When i swap bodies weathwer it be a Zook body or a Hilux Extra cab i will be moving the rear axle forward at least 10" and going coils.

I think wioth a hilux the only downfall of longer wheelbase is the turning circle. As ground clearance is nowhere near as much a prob as it is with Nissans.

so you want this sort of approach angle tony !!!!!!

Hay Tony, what is your ground clearance.

Just measured it at aprox 20psi on 38.5s and i have 24" to the lowest point but when it is back on the road again i should have at least 4" more than this without any more lift or tyres.

moose wrote:so you want this sort of approach angle tony !!!!!!

That would be easy if i wanted to go coils in the front but im sticking with leaves up front.

When i swap bodies weathwer it be a Zook body or a Hilux Extra cab i will be moving the rear axle forward at least 10" and going coils.

wats that comment then ?????

Its exactly as it reads i will be moving the REAR axle forward and going coils. But on the rear only.

Just a few specs on mine if anyone's interested. Don't know how close this is to the perfect wheelbase - I'm yet to try it out myself Measurements taken on flat ground with heavy tray with tools in it. Tyres 33x12.5x15 BFG Muds on 15x8 Sunrasia rims.

Height 1915mm 75.4"
Wheelbase 2930mm 115.35"
Rear width (from outside of tread on one tyre to outside of tread on other) 1800mm 70.87"
Front(as above) 1725mm 67.91"
Rear diff clearance at 34-36psi 270mm 10.63"
Front diff cleaance at 36psi 260mm 10.26"

I haven't allowed for the 10mm thick layer of oil on the underside of my rig due to a failed rear crankshaft seal.

Weight distribution with above setup is as follows:

960kg on Rear axle
980kg on Front axle